I just wanted to update this real quick. I know there are risks of buying used parts online. To buy from someone with zero i trader feedback and low post count is a "risk". I think there are a lot of people out there who ride but don't frequent the forum enough to reach that 100 post count requirement to make a for sale thread.
I like the rules for the classifieds but at the same time I think it deters some people. So anyway I got my exhaust from ustinovas with no issue. It was exactly as described. Hopefully he will come back to 600rr. Get the post requirement and sell more.